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Development of Antibiotic Resistance01:30

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Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
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The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
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  9. Veterinary Medicine (excl. Urology)
  11. Ten-year Antimicrobial Resistance Trend In Uropathogenic Escherichia Coli (upec) Isolated From Dogs And Cats Admitted To A Veterinary Teaching Hospital In Italy

Ten-Year Antimicrobial Resistance Trend in Uropathogenic Escherichia coli (UPEC) Isolated from Dogs and Cats Admitted to a Veterinary Teaching Hospital in Italy

Alessandro Bellato1, Patrizia Robino1, Maria Cristina Stella1

  • 1Department of Veterinary Sciences, University of Turin, Largo Paolo Braccini 2, 10095 Grugliasco, Italy.

Microorganisms
|November 27, 2024

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View abstract on PubMed

Summary
This summary is machine-generated.

Antimicrobial resistance in cat and dog urinary tract infections increased until 2019. A subsequent decline in resistance, particularly for restricted antibiotics, suggests successful stewardship efforts in Italy.

Area of Science:

  • Veterinary Medicine
  • Antimicrobial Resistance Surveillance
  • Companion Animal Health

Background:

  • Urinary tract infections (UTIs) are prevalent in cats and dogs, necessitating effective antibiotic selection.
  • Monitoring antimicrobial resistance (AMR) trends is crucial for guiding prudent antimicrobial use in veterinary medicine.
  • Limited AMR data exists for companion animals in Italy, highlighting a knowledge gap.

Purpose of the Study:

  • To investigate the ten-year trend of antimicrobial resistance in uropathogenic Escherichia coli (UPEC) from canine and feline UTIs in Italy.
  • To analyze resistance patterns against different antibiotic categories based on European Medicine Agency guidelines.
  • To assess the impact of antimicrobial stewardship policies on resistance trends.

Main Methods:

Keywords:
antimicrobial resistance (AMR)catdogsusceptibility testing

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  • Retrospective analysis of 339 UPEC strains isolated from cat and dog urine samples (January 2014 - October 2023).
  • Antimicrobial susceptibility testing against up to 11 antibacterial classes, categorized A-D per EMA guidelines.
  • Evaluation of resistance trends over the study period and correlation with regulatory changes.

    • Main Results:

    • Higher resistance rates were observed for antibiotic categories C and D compared to categories A and B.
    • A steady increase in UPEC resistance was noted from 2014 to 2019.
    • A significant decline in resistance across all categories was observed from 2020 onwards, most pronounced in restricted categories.

    Conclusions:

    • The study demonstrates a significant shift in AMR trends for UPEC in Italian companion animals, with a notable decrease post-2020.
    • The observed reduction in resistance correlates with stricter European and national regulations on antimicrobial use.
    • Findings align with AMR trends in other European countries and Italian food-producing animals, supporting the effectiveness of antimicrobial stewardship.
    uropathogenic Escherichia coli (UPEC)